What is the photo size for US visa application?

photograph taken against a white background with following specifications: # 2 by 2 inches (roughly 50 mm square) with the head centered in the frame. # The head (measured from the top of the hair to the bottom of the chin) should measure between 1 inch to 1 3/8 inches (25 mm to 35 mm) with the eye level between 1 1/8 inch to 1 3/8 inches (28 mm and 35 mm) from the bottom of the photo. # digitally altered photographs not accepted. # no headgear/sunglassess othen than required by religious beliefs.